signed by artist, lower right, Gangolf; by later hand, verso lower right, in graphite: i-R.2
Marks and Labels
stamp, verso center, in black ink: R
Ruth Cole Kainen [1922-2009], Washington, DC; gift to NGA 2012.
- Rathenau, Ernest. Im Memoriam Paul Gangolf. Berlin: Euphorin Verlag, 1964, no. 2.